From my email from VOSA, details of how many buses can operate from Saltmeadows:

PB0003954 SN GO NORTH EAST LIMITED
Director(s): ALEXANDER PAUL EDWARDS, DAVID ALLEN BROWN, Simon Patrick Butcher, Gary Edmundson, Stephen King
117 QUEEN STREET, GATESHEAD, NE8 2UA
New operating centre: GO NORTH EAST, SALTMEADOWS ROAD, GATESHEAD, NE8 3AH
New authorisation at this operating centre will be: 30 vehicle(s)
New Undertaking Vehicles with eight passenger seats or less will not be operated under the licence without the prior written agreement of the traffic commissioner who may require you to agree to certain undertakings.. Attached to licence
New Undertaking Limousines and novelty type vehicles are not to be operated under this operator’s licence.. Attached to licence
Current Undertaking The operator will provide the Traffic Commissioner with bank statements covering a three month period and other financial details (such as overdraft facility agreements or credit card statements) that show the licence holder has access to the required level of funding. These details to be provided by 30 June 2018 for the period March, April and May.. Attached to licence. Amended to: The operator will provide the Traffic Commissioner with bank statements covering a three month period and other financial details (such as overdraft facility agreements or credit card statements) that show the licence holder has access to the required level of funding. These details to be provided by 30 June 2018 for the period March, April and May.